Home / 8,128.26-12,195.72-2,934.54

Finding the Fourth Proportional to 8,128.26, 12,195.72 and 2,934.54

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Solution

The fourth proportional to 8,128.26, 12,195.72 and 2,934.54 is: 4,403.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.26 : 12,195.72 = 2,934.54 : x
  2. Step 2: Convert to fraction form
    8,128.26/12,195.72 = 2,934.54/x
  3. Step 3: Cross multiply
    8,128.26x = 12,195.72 × 2,934.54
  4. Step 4: Simplify right side
    8,128.26x = 35,788,828.17
  5. Step 5: Solve for x
    x = 35,788,828.17/8,128.26
  6. Step 6: Final answer
    x = 4,403.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.